** Also affects: linux (Ubuntu Bionic)
   Importance: High
     Assignee: dann frazier (dannf)
       Status: Fix Released

** Also affects: linux (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: Fix Released => Triaged

** Changed in: linux (Ubuntu Artful)
       Status: New => Fix Released

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  Support low-pin-count devices on Hisilicon SoCs

Status in linux package in Ubuntu:
Status in linux source package in Zesty:
  Fix Released
Status in linux source package in Artful:
  Fix Released
Status in linux source package in Bionic:

Bug description:
  The HiSilicon Hip06/Hip07 SoCs include a low-pin-count (LPC) host controller. 
The Linux kernel needs support for this interface to use attached devices, such 
as a UART and the IPMI system interface.

  [Test Case]
  Boot up a HiSilicon D05 system, confirm that the following command returns 
w/o error:

  $ sudo ipmitool lan print

  [Regression Risk]
  The proposed patchset only enables LIBIO for arm64, so the greatest 
regression risk is to other arm64 systems. We have mitigated that by testing on 
a wide range of hardware (all certified arm64 servers + some in-devel systems). 
There remains some arch-independent changes to the generic PCI code. The patch 
"PCI: Restore codepath for !CONFIG_LIBIO" was added to mitigate the risk to 
other architectures by restoring the previous code for those architectures.

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